Salting the Battlefield is a 2014 British television film directed by David Hare. It is the third and final instalment of the Worricker Trilogy, following Page Eight and Turks & Caicos. The film stars Bill Nighy as MI5 agent Johnny Worricker, along with Helena Bonham Carter, Ralph Fiennes, and Olivia Williams.
In Salting the Battlefield, Worricker has gone on the run with his former lover and fellow MI5 agent, Margot Tyrell (played by Bonham Carter), after they both became involved in a plot to expose a corrupt British politician named Alec Beasley (played by Fiennes). As they make their way across Europe, Worricker must confront his troubled past and the betrayal of his colleagues at MI5. Meanwhile, Beasley and his cronies are determined to track down Worricker and Tyrell and silence them for good.
The film explores themes of power, secrets, and the hidden machinations of the British establishment. It also delves into the personal demons of Johnny Worricker and his complicated relationships with the people in his life. Salting the Battlefield is a tense and thought-provoking thriller that brings the Worricker Trilogy to a gripping conclusion.